/* $OpenBSD: dev.c,v 1.24 2016/01/09 08:53:08 ratchov Exp $ */ /* * Copyright (c) 2008-2012 Alexandre Ratchov * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include "abuf.h" #include "defs.h" #include "dev.h" #include "dsp.h" #include "siofile.h" #include "midi.h" #include "sysex.h" #include "utils.h" void zomb_onmove(void *); void zomb_onvol(void *, unsigned int); void zomb_fill(void *); void zomb_flush(void *); void zomb_eof(void *); void zomb_exit(void *); void dev_log(struct dev *); void dev_midi_qfr(struct dev *, int); void dev_midi_full(struct dev *); void dev_midi_vol(struct dev *, struct slot *); void dev_midi_master(struct dev *); void dev_midi_slotdesc(struct dev *, struct slot *); void dev_midi_dump(struct dev *); void dev_midi_imsg(void *, unsigned char *, int); void dev_midi_omsg(void *, unsigned char *, int); void dev_midi_fill(void *, int); void dev_midi_exit(void *); int play_filt_resamp(struct slot *, void *, void *, int); int play_filt_dec(struct slot *, void *, void *, int); void dev_mix_badd(struct dev *, struct slot *); void dev_mix_adjvol(struct dev *); int rec_filt_resamp(struct slot *, void *, void *, int); int rec_filt_enc(struct slot *, void *, void *, int); void dev_sub_bcopy(struct dev *, struct slot *); void dev_onmove(struct dev *, int); void dev_master(struct dev *, unsigned int); void dev_cycle(struct dev *); int dev_getpos(struct dev *); struct dev *dev_new(char *, struct aparams *, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int); void dev_adjpar(struct dev *, int, int, int, int, int); int dev_open(struct dev *); void dev_close(struct dev *); int dev_ref(struct dev *); void dev_unref(struct dev *); int dev_init(struct dev *); void dev_done(struct dev *); struct dev *dev_bynum(int); void dev_del(struct dev *); unsigned int dev_roundof(struct dev *, unsigned int); void dev_wakeup(struct dev *); void dev_sync_attach(struct dev *); void dev_mmcstart(struct dev *); void dev_mmcstop(struct dev *); void dev_mmcloc(struct dev *, unsigned int); void slot_log(struct slot *); struct slot *slot_new(struct dev *, char *, struct slotops *, void *, int); void slot_del(struct slot *); void slot_setvol(struct slot *, unsigned int); void slot_attach(struct slot *); void slot_ready(struct slot *); void slot_start(struct slot *); void slot_detach(struct slot *); void slot_stop(struct slot *); void slot_skip_update(struct slot *); void slot_write(struct slot *); void slot_read(struct slot *); int slot_skip(struct slot *); struct midiops dev_midiops = { dev_midi_imsg, dev_midi_omsg, dev_midi_fill, dev_midi_exit }; struct slotops zomb_slotops = { zomb_onmove, zomb_onvol, zomb_fill, zomb_flush, zomb_eof, zomb_exit }; struct dev *dev_list = NULL; unsigned int dev_sndnum = 0; void dev_log(struct dev *d) { #ifdef DEBUG static char *pstates[] = { "cfg", "ini", "run" }; #endif log_puts("snd"); log_putu(d->num); #ifdef DEBUG if (log_level >= 3) { log_puts(" pst="); log_puts(pstates[d->pstate]); } #endif } void slot_log(struct slot *s) { #ifdef DEBUG static char *pstates[] = { "ini", "sta", "rdy", "run", "stp", "mid" }; static char *tstates[] = { "off", "sta", "run", "stp" }; #endif log_puts(s->name); log_putu(s->unit); #ifdef DEBUG if (log_level >= 3) { log_puts(" vol="); log_putu(s->vol); if (s->ops) { log_puts(",pst="); log_puts(pstates[s->pstate]); log_puts(",mmc="); log_puts(tstates[s->tstate]); } } #endif } void zomb_onmove(void *arg) { } void zomb_onvol(void *arg, unsigned int vol) { } void zomb_fill(void *arg) { } void zomb_flush(void *arg) { } void zomb_eof(void *arg) { struct slot *s = arg; #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": zomb_eof\n"); } #endif s->ops = NULL; } void zomb_exit(void *arg) { #ifdef DEBUG struct slot *s = arg; if (log_level >= 3) { slot_log(s); log_puts(": zomb_exit\n"); } #endif } /* * send a quarter frame MTC message */ void dev_midi_qfr(struct dev *d, int delta) { unsigned char buf[2]; unsigned int data; int qfrlen; d->mtc.delta += delta * MTC_SEC; qfrlen = d->rate * (MTC_SEC / (4 * d->mtc.fps)); while (d->mtc.delta >= qfrlen) { switch (d->mtc.qfr) { case 0: data = d->mtc.fr & 0xf; break; case 1: data = d->mtc.fr >> 4; break; case 2: data = d->mtc.sec & 0xf; break; case 3: data = d->mtc.sec >> 4; break; case 4: data = d->mtc.min & 0xf; break; case 5: data = d->mtc.min >> 4; break; case 6: data = d->mtc.hr & 0xf; break; case 7: data = (d->mtc.hr >> 4) | (d->mtc.fps_id << 1); /* * tick messages are sent 2 frames ahead */ d->mtc.fr += 2; if (d->mtc.fr < d->mtc.fps) break; d->mtc.fr -= d->mtc.fps; d->mtc.sec++; if (d->mtc.sec < 60) break; d->mtc.sec = 0; d->mtc.min++; if (d->mtc.min < 60) break; d->mtc.min = 0; d->mtc.hr++; if (d->mtc.hr < 24) break; d->mtc.hr = 0; break; default: /* NOTREACHED */ data = 0; } buf[0] = 0xf1; buf[1] = (d->mtc.qfr << 4) | data; d->mtc.qfr++; d->mtc.qfr &= 7; midi_send(d->midi, buf, 2); d->mtc.delta -= qfrlen; } } /* * send a full frame MTC message */ void dev_midi_full(struct dev *d) { struct sysex x; unsigned int fps; d->mtc.delta = MTC_SEC * dev_getpos(d); if (d->rate % (30 * 4 * d->round) == 0) { d->mtc.fps_id = MTC_FPS_30; d->mtc.fps = 30; } else if (d->rate % (25 * 4 * d->round) == 0) { d->mtc.fps_id = MTC_FPS_25; d->mtc.fps = 25; } else { d->mtc.fps_id = MTC_FPS_24; d->mtc.fps = 24; } #ifdef DEBUG if (log_level >= 3) { dev_log(d); log_puts(": mtc full frame at "); log_puti(d->mtc.delta); log_puts(", "); log_puti(d->mtc.fps); log_puts(" fps\n"); } #endif fps = d->mtc.fps; d->mtc.hr = (d->mtc.origin / (MTC_SEC * 3600)) % 24; d->mtc.min = (d->mtc.origin / (MTC_SEC * 60)) % 60; d->mtc.sec = (d->mtc.origin / (MTC_SEC)) % 60; d->mtc.fr = (d->mtc.origin / (MTC_SEC / fps)) % fps; x.start = SYSEX_START; x.type = SYSEX_TYPE_RT; x.dev = SYSEX_DEV_ANY; x.id0 = SYSEX_MTC; x.id1 = SYSEX_MTC_FULL; x.u.full.hr = d->mtc.hr | (d->mtc.fps_id << 5); x.u.full.min = d->mtc.min; x.u.full.sec = d->mtc.sec; x.u.full.fr = d->mtc.fr; x.u.full.end = SYSEX_END; d->mtc.qfr = 0; midi_send(d->midi, (unsigned char *)&x, SYSEX_SIZE(full)); } /* * send a volume change MIDI message */ void dev_midi_vol(struct dev *d, struct slot *s) { unsigned char msg[3]; msg[0] = MIDI_CTL | (s - d->slot); msg[1] = MIDI_CTL_VOL; msg[2] = s->vol; midi_send(d->midi, msg, 3); } /* * send a master volume MIDI message */ void dev_midi_master(struct dev *d) { struct sysex x; memset(&x, 0, sizeof(struct sysex)); x.start = SYSEX_START; x.type = SYSEX_TYPE_RT; x.dev = SYSEX_DEV_ANY; x.id0 = SYSEX_CONTROL; x.id1 = SYSEX_MASTER; x.u.master.fine = 0; x.u.master.coarse = d->master; x.u.master.end = SYSEX_END; midi_send(d->midi, (unsigned char *)&x, SYSEX_SIZE(master)); } /* * send a sndiod-specific slot description MIDI message */ void dev_midi_slotdesc(struct dev *d, struct slot *s) { struct sysex x; memset(&x, 0, sizeof(struct sysex)); x.start = SYSEX_START; x.type = SYSEX_TYPE_EDU; x.dev = SYSEX_DEV_ANY; x.id0 = SYSEX_AUCAT; x.id1 = SYSEX_AUCAT_SLOTDESC; if (*s->name != '\0') { snprintf((char *)x.u.slotdesc.name, SYSEX_NAMELEN, "%s%u", s->name, s->unit); } x.u.slotdesc.chan = s - d->slot; x.u.slotdesc.end = SYSEX_END; midi_send(d->midi, (unsigned char *)&x, SYSEX_SIZE(slotdesc)); } void dev_midi_dump(struct dev *d) { struct sysex x; struct slot *s; int i; dev_midi_master(d); for (i = 0, s = d->slot; i < DEV_NSLOT; i++, s++) { dev_midi_slotdesc(d, s); dev_midi_vol(d, s); } x.start = SYSEX_START; x.type = SYSEX_TYPE_EDU; x.dev = SYSEX_DEV_ANY; x.id0 = SYSEX_AUCAT; x.id1 = SYSEX_AUCAT_DUMPEND; x.u.dumpend.end = SYSEX_END; midi_send(d->midi, (unsigned char *)&x, SYSEX_SIZE(dumpend)); } void dev_midi_imsg(void *arg, unsigned char *msg, int len) { #ifdef DEBUG struct dev *d = arg; dev_log(d); log_puts(": can't receive midi messages\n"); panic(); #endif } void dev_midi_omsg(void *arg, unsigned char *msg, int len) { struct dev *d = arg; struct sysex *x; unsigned int fps, chan; if ((msg[0] & MIDI_CMDMASK) == MIDI_CTL && msg[1] == MIDI_CTL_VOL) { chan = msg[0] & MIDI_CHANMASK; if (chan >= DEV_NSLOT) return; slot_setvol(d->slot + chan, msg[2]); return; } x = (struct sysex *)msg; if (x->start != SYSEX_START) return; if (len < SYSEX_SIZE(empty)) return; switch (x->type) { case SYSEX_TYPE_RT: if (x->id0 == SYSEX_CONTROL && x->id1 == SYSEX_MASTER) { if (len == SYSEX_SIZE(master)) dev_master(d, x->u.master.coarse); return; } if (x->id0 != SYSEX_MMC) return; switch (x->id1) { case SYSEX_MMC_STOP: if (len != SYSEX_SIZE(stop)) return; if (log_level >= 2) { dev_log(d); log_puts(": mmc stop\n"); } dev_mmcstop(d); break; case SYSEX_MMC_START: if (len != SYSEX_SIZE(start)) return; if (log_level >= 2) { dev_log(d); log_puts(": mmc start\n"); } dev_mmcstart(d); break; case SYSEX_MMC_LOC: if (len != SYSEX_SIZE(loc) || x->u.loc.len != SYSEX_MMC_LOC_LEN || x->u.loc.cmd != SYSEX_MMC_LOC_CMD) return; switch (x->u.loc.hr >> 5) { case MTC_FPS_24: fps = 24; break; case MTC_FPS_25: fps = 25; break; case MTC_FPS_30: fps = 30; break; default: dev_mmcstop(d); return; } dev_mmcloc(d, (x->u.loc.hr & 0x1f) * 3600 * MTC_SEC + x->u.loc.min * 60 * MTC_SEC + x->u.loc.sec * MTC_SEC + x->u.loc.fr * (MTC_SEC / fps) + x->u.loc.cent * (MTC_SEC / 100 / fps)); break; } break; case SYSEX_TYPE_EDU: if (x->id0 != SYSEX_AUCAT || x->id1 != SYSEX_AUCAT_DUMPREQ) return; if (len != SYSEX_SIZE(dumpreq)) return; dev_midi_dump(d); break; } } void dev_midi_fill(void *arg, int count) { /* nothing to do */ } void dev_midi_exit(void *arg) { struct dev *d = arg; if (log_level >= 1) { dev_log(d); log_puts(": midi end point died\n"); } if (d->pstate != DEV_CFG) dev_close(d); } int slot_skip(struct slot *s) { unsigned char *data = (unsigned char *)0xdeadbeef; /* please gcc */ int max, count; max = s->skip; while (s->skip > 0) { if (s->pstate != SLOT_STOP && (s->mode & MODE_RECMASK)) { data = abuf_wgetblk(&s->sub.buf, &count); if (count < s->round * s->sub.bpf) break; } if (s->mode & MODE_PLAY) { if (s->mix.buf.used < s->round * s->mix.bpf) break; } #ifdef DEBUG if (log_level >= 4) { slot_log(s); log_puts(": skipped a cycle\n"); } #endif if (s->pstate != SLOT_STOP && (s->mode & MODE_RECMASK)) { if (s->sub.encbuf) enc_sil_do(&s->sub.enc, data, s->round); else memset(data, 0, s->round * s->sub.bpf); abuf_wcommit(&s->sub.buf, s->round * s->sub.bpf); } if (s->mode & MODE_PLAY) { abuf_rdiscard(&s->mix.buf, s->round * s->mix.bpf); } s->skip--; } return max - s->skip; } int play_filt_resamp(struct slot *s, void *res_in, void *out, int todo) { int i, offs, vol, nch; void *in; if (s->mix.resampbuf) { todo = resamp_do(&s->mix.resamp, res_in, s->mix.resampbuf, todo); in = s->mix.resampbuf; } else in = res_in; nch = s->mix.cmap.nch; vol = ADATA_MUL(s->mix.weight, s->mix.vol) / s->mix.join; cmap_add(&s->mix.cmap, in, out, vol, todo); offs = 0; for (i = s->mix.join - 1; i > 0; i--) { offs += nch; cmap_add(&s->mix.cmap, (adata_t *)in + offs, out, vol, todo); } offs = 0; for (i = s->mix.expand - 1; i > 0; i--) { offs += nch; cmap_add(&s->mix.cmap, in, (adata_t *)out + offs, vol, todo); } return todo; } int play_filt_dec(struct slot *s, void *in, void *out, int todo) { void *tmp; tmp = s->mix.decbuf; if (tmp) dec_do(&s->mix.dec, in, tmp, todo); return play_filt_resamp(s, tmp ? tmp : in, out, todo); } /* * mix "todo" frames from the input block over the output block; if * there are frames to drop, less frames are consumed from the input */ void dev_mix_badd(struct dev *d, struct slot *s) { adata_t *idata, *odata; int icount; odata = DEV_PBUF(d); idata = (adata_t *)abuf_rgetblk(&s->mix.buf, &icount); #ifdef DEBUG if (icount < s->round * s->mix.bpf) { slot_log(s); log_puts(": not enough data to mix ("); log_putu(icount); log_puts("bytes)\n"); panic(); } #endif play_filt_dec(s, idata, odata, s->round); abuf_rdiscard(&s->mix.buf, s->round * s->mix.bpf); } /* * Normalize input levels. */ void dev_mix_adjvol(struct dev *d) { unsigned int n; struct slot *i, *j; int weight; for (i = d->slot_list; i != NULL; i = i->next) { if (!(i->mode & MODE_PLAY)) continue; weight = ADATA_UNIT; if (d->autovol) { /* * count the number of inputs that have * overlapping channel sets */ n = 0; for (j = d->slot_list; j != NULL; j = j->next) { if (!(j->mode & MODE_PLAY)) continue; if (i->mix.slot_cmin <= j->mix.slot_cmax && i->mix.slot_cmax >= j->mix.slot_cmin) n++; } weight /= n; } if (weight > i->mix.maxweight) weight = i->mix.maxweight; i->mix.weight = ADATA_MUL(weight, MIDI_TO_ADATA(d->master)); #ifdef DEBUG if (log_level >= 3) { slot_log(i); log_puts(": set weight: "); log_puti(i->mix.weight); log_puts("/"); log_puti(i->mix.maxweight); log_puts("\n"); } #endif } } int rec_filt_resamp(struct slot *s, void *in, void *res_out, int todo) { int i, vol, offs, nch; void *out = res_out; out = (s->sub.resampbuf) ? s->sub.resampbuf : res_out; nch = s->sub.cmap.nch; vol = ADATA_UNIT / s->sub.join; cmap_copy(&s->sub.cmap, in, out, vol, todo); offs = 0; for (i = s->sub.join - 1; i > 0; i--) { offs += nch; cmap_add(&s->sub.cmap, (adata_t *)in + offs, out, vol, todo); } offs = 0; for (i = s->sub.expand - 1; i > 0; i--) { offs += nch; cmap_copy(&s->sub.cmap, in, (adata_t *)out + offs, vol, todo); } if (s->sub.resampbuf) { todo = resamp_do(&s->sub.resamp, s->sub.resampbuf, res_out, todo); } return todo; } int rec_filt_enc(struct slot *s, void *in, void *out, int todo) { void *tmp; tmp = s->sub.encbuf; todo = rec_filt_resamp(s, in, tmp ? tmp : out, todo); if (tmp) enc_do(&s->sub.enc, tmp, out, todo); return todo; } /* * Copy data from slot to device */ void dev_sub_bcopy(struct dev *d, struct slot *s) { adata_t *idata, *odata; int ocount, moffs; if (s->mode & MODE_MON) { moffs = d->poffs + d->round; if (moffs == d->psize) moffs = 0; idata = d->pbuf + moffs * d->pchan; } else idata = d->rbuf; odata = (adata_t *)abuf_wgetblk(&s->sub.buf, &ocount); #ifdef DEBUG if (ocount < s->round * s->sub.bpf) { log_puts("dev_sub_bcopy: not enough space\n"); panic(); } #endif ocount = rec_filt_enc(s, idata, odata, d->round); abuf_wcommit(&s->sub.buf, ocount * s->sub.bpf); } /* * run a one block cycle: consume one recorded block from * rbuf and produce one play block in pbuf */ void dev_cycle(struct dev *d) { struct slot *s, **ps; unsigned char *base; int nsamp; /* * check if the device is actually used. If it isn't, * then close it */ if (d->slot_list == NULL && d->tstate != MMC_RUN) { if (log_level >= 2) { dev_log(d); log_puts(": device stopped\n"); } dev_sio_stop(d); d->pstate = DEV_INIT; if (d->refcnt == 0) dev_close(d); return; } if (d->prime > 0) { #ifdef DEBUG if (log_level >= 4) { dev_log(d); log_puts(": empty cycle, prime = "); log_putu(d->prime); log_puts("\n"); } #endif base = (unsigned char *)DEV_PBUF(d); nsamp = d->round * d->pchan; memset(base, 0, nsamp * sizeof(adata_t)); if (d->encbuf) { enc_do(&d->enc, (unsigned char *)DEV_PBUF(d), d->encbuf, d->round); } d->prime -= d->round; return; } d->delta -= d->round; #ifdef DEBUG if (log_level >= 4) { dev_log(d); log_puts(": full cycle: delta = "); log_puti(d->delta); if (d->mode & MODE_PLAY) { log_puts(", poffs = "); log_puti(d->poffs); } log_puts("\n"); } #endif if (d->mode & MODE_PLAY) { base = (unsigned char *)DEV_PBUF(d); nsamp = d->round * d->pchan; memset(base, 0, nsamp * sizeof(adata_t)); } if ((d->mode & MODE_REC) && d->decbuf) dec_do(&d->dec, d->decbuf, (unsigned char *)d->rbuf, d->round); ps = &d->slot_list; while ((s = *ps) != NULL) { #ifdef DEBUG if (log_level >= 4) { slot_log(s); log_puts(": running"); log_puts(", skip = "); log_puti(s->skip); log_puts("\n"); } #endif /* * skip cycles for XRUN_SYNC correction */ slot_skip(s); if (s->skip < 0) { s->skip++; ps = &s->next; continue; } #ifdef DEBUG if (s->pstate == SLOT_STOP && !(s->mode & MODE_PLAY)) { slot_log(s); log_puts(": rec-only slots can't be drained\n"); panic(); } #endif /* * check if stopped stream finished draining */ if (s->pstate == SLOT_STOP && s->mix.buf.used < s->round * s->mix.bpf) { /* * partial blocks are zero-filled by socket * layer, so s->mix.buf.used == 0 and we can * destroy the buffer */ s->pstate = SLOT_INIT; abuf_done(&s->mix.buf); if (s->mix.decbuf) xfree(s->mix.decbuf); if (s->mix.resampbuf) xfree(s->mix.resampbuf); s->ops->eof(s->arg); *ps = s->next; dev_mix_adjvol(d); continue; } /* * check for xruns */ if (((s->mode & MODE_PLAY) && s->mix.buf.used < s->round * s->mix.bpf) || ((s->mode & MODE_RECMASK) && s->sub.buf.len - s->sub.buf.used < s->round * s->sub.bpf)) { #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": xrun, pause cycle\n"); } #endif if (s->xrun == XRUN_IGNORE) { s->delta -= s->round; ps = &s->next; } else if (s->xrun == XRUN_SYNC) { s->skip++; ps = &s->next; } else if (s->xrun == XRUN_ERROR) { s->ops->exit(s->arg); *ps = s->next; } else { #ifdef DEBUG slot_log(s); log_puts(": bad xrun mode\n"); panic(); #endif } continue; } if ((s->mode & MODE_RECMASK) && !(s->pstate == SLOT_STOP)) { if (s->sub.prime == 0) { dev_sub_bcopy(d, s); s->ops->flush(s->arg); } else { #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": prime = "); log_puti(s->sub.prime); log_puts("\n"); } #endif s->sub.prime--; } } if (s->mode & MODE_PLAY) { dev_mix_badd(d, s); if (s->pstate != SLOT_STOP) s->ops->fill(s->arg); } ps = &s->next; } if ((d->mode & MODE_PLAY) && d->encbuf) { enc_do(&d->enc, (unsigned char *)DEV_PBUF(d), d->encbuf, d->round); } } /* * called at every clock tick by the device */ void dev_onmove(struct dev *d, int delta) { long long pos; struct slot *s, *snext; d->delta += delta; for (s = d->slot_list; s != NULL; s = snext) { /* * s->ops->onmove() may remove the slot */ snext = s->next; pos = (long long)delta * s->round + s->delta_rem; s->delta_rem = pos % d->round; s->delta += pos / (int)d->round; if (s->delta >= 0) s->ops->onmove(s->arg); } if (d->tstate == MMC_RUN) dev_midi_qfr(d, delta); } void dev_master(struct dev *d, unsigned int master) { if (log_level >= 2) { dev_log(d); log_puts(": master volume set to "); log_putu(master); log_puts("\n"); } d->master = master; if (d->mode & MODE_PLAY) dev_mix_adjvol(d); } /* * return the latency that a stream would have if it's attached */ int dev_getpos(struct dev *d) { return (d->mode & MODE_PLAY) ? -d->bufsz : 0; } /* * Create a sndio device */ struct dev * dev_new(char *path, struct aparams *par, unsigned int mode, unsigned int bufsz, unsigned int round, unsigned int rate, unsigned int hold, unsigned int autovol) { struct dev *d; unsigned int i; if (dev_sndnum == DEV_NMAX) { if (log_level >= 1) log_puts("too many devices\n"); return NULL; } d = xmalloc(sizeof(struct dev)); d->path = xstrdup(path); d->num = dev_sndnum++; /* * XXX: below, we allocate a midi input buffer, since we don't * receive raw midi data, so no need to allocate a input * ibuf. Possibly set imsg & fill callbacks to NULL and * use this to in midi_new() to check if buffers need to be * allocated */ d->midi = midi_new(&dev_midiops, d, MODE_MIDIIN | MODE_MIDIOUT); midi_tag(d->midi, d->num); d->reqpar = *par; d->reqmode = mode; d->reqpchan = d->reqrchan = 0; d->reqbufsz = bufsz; d->reqround = round; d->reqrate = rate; d->hold = hold; d->autovol = autovol; d->refcnt = 0; d->pstate = DEV_CFG; d->serial = 0; for (i = 0; i < DEV_NSLOT; i++) { d->slot[i].unit = i; d->slot[i].ops = NULL; d->slot[i].vol = MIDI_MAXCTL; d->slot[i].tstate = MMC_OFF; d->slot[i].serial = d->serial++; d->slot[i].name[0] = '\0'; } d->slot_list = NULL; d->master = MIDI_MAXCTL; d->mtc.origin = 0; d->tstate = MMC_STOP; d->next = dev_list; dev_list = d; return d; } /* * adjust device parameters and mode */ void dev_adjpar(struct dev *d, int mode, int pmin, int pmax, int rmin, int rmax) { d->reqmode |= mode & MODE_AUDIOMASK; if (mode & MODE_PLAY) { if (d->reqpchan < pmax + 1) d->reqpchan = pmax + 1; } if (mode & MODE_REC) { if (d->reqrchan < rmax + 1) d->reqrchan = rmax + 1; } } /* * Open the device with the dev_reqxxx capabilities. Setup a mixer, demuxer, * monitor, midi control, and any necessary conversions. */ int dev_open(struct dev *d) { d->mode = d->reqmode; d->round = d->reqround; d->bufsz = d->reqbufsz; d->rate = d->reqrate; d->pchan = d->reqpchan; d->rchan = d->reqrchan; d->par = d->reqpar; if (d->pchan == 0) d->pchan = 2; if (d->rchan == 0) d->rchan = 2; if (!dev_sio_open(d)) { if (log_level >= 1) { dev_log(d); log_puts(": "); log_puts(d->path); log_puts(": failed to open audio device\n"); } return 0; } if (d->mode & MODE_REC) { /* * Create device <-> demuxer buffer */ d->rbuf = xmalloc(d->round * d->rchan * sizeof(adata_t)); /* * Insert a converter, if needed. */ if (!aparams_native(&d->par)) { dec_init(&d->dec, &d->par, d->rchan); d->decbuf = xmalloc(d->round * d->rchan * d->par.bps); } else d->decbuf = NULL; } if (d->mode & MODE_PLAY) { /* * Create device <-> mixer buffer */ d->poffs = 0; d->psize = d->bufsz + d->round; d->pbuf = xmalloc(d->psize * d->pchan * sizeof(adata_t)); d->mode |= MODE_MON; /* * Append a converter, if needed. */ if (!aparams_native(&d->par)) { enc_init(&d->enc, &d->par, d->pchan); d->encbuf = xmalloc(d->round * d->pchan * d->par.bps); } else d->encbuf = NULL; } d->pstate = DEV_INIT; if (log_level >= 2) { dev_log(d); log_puts(": "); log_putu(d->rate); log_puts("Hz, "); aparams_log(&d->par); if (d->mode & MODE_PLAY) { log_puts(", play 0:"); log_puti(d->pchan - 1); } if (d->mode & MODE_REC) { log_puts(", rec 0:"); log_puti(d->rchan - 1); } log_puts(", "); log_putu(d->bufsz / d->round); log_puts(" blocks of "); log_putu(d->round); log_puts(" frames\n"); } return 1; } /* * force the device to go in DEV_CFG state, the caller is supposed to * ensure buffers are drained */ void dev_close(struct dev *d) { int i; struct slot *s; #ifdef DEBUG if (log_level >= 3) { dev_log(d); log_puts(": closing\n"); } #endif d->pstate = DEV_CFG; for (s = d->slot, i = DEV_NSLOT; i > 0; i--, s++) { if (s->ops) s->ops->exit(s->arg); s->ops = NULL; } d->slot_list = NULL; dev_sio_close(d); if (d->mode & MODE_PLAY) { if (d->encbuf != NULL) xfree(d->encbuf); xfree(d->pbuf); } if (d->mode & MODE_REC) { if (d->decbuf != NULL) xfree(d->decbuf); xfree(d->rbuf); } } int dev_ref(struct dev *d) { #ifdef DEBUG if (log_level >= 3) { dev_log(d); log_puts(": device requested\n"); } #endif if (d->pstate == DEV_CFG && !dev_open(d)) return 0; d->refcnt++; return 1; } void dev_unref(struct dev *d) { #ifdef DEBUG if (log_level >= 3) { dev_log(d); log_puts(": device released\n"); } #endif d->refcnt--; if (d->refcnt == 0 && d->pstate == DEV_INIT) dev_close(d); } /* * initialize the device with the current parameters */ int dev_init(struct dev *d) { if ((d->reqmode & MODE_AUDIOMASK) == 0) { #ifdef DEBUG dev_log(d); log_puts(": has no streams\n"); #endif return 0; } if (d->hold && !dev_ref(d)) return 0; return 1; } /* * Unless the device is already in process of closing, request it to close */ void dev_done(struct dev *d) { #ifdef DEBUG if (log_level >= 3) { dev_log(d); log_puts(": draining\n"); } #endif if (d->tstate != MMC_STOP) dev_mmcstop(d); if (d->hold) dev_unref(d); } struct dev * dev_bynum(int num) { struct dev *d; for (d = dev_list; d != NULL; d = d->next) { if (d->num == num) return d; } return NULL; } /* * Free the device */ void dev_del(struct dev *d) { struct dev **p; #ifdef DEBUG if (log_level >= 3) { dev_log(d); log_puts(": deleting\n"); } #endif if (d->pstate != DEV_CFG) dev_close(d); for (p = &dev_list; *p != d; p = &(*p)->next) { #ifdef DEBUG if (*p == NULL) { dev_log(d); log_puts(": device to delete not on the list\n"); panic(); } #endif } midi_del(d->midi); *p = d->next; xfree(d->path); xfree(d); } unsigned int dev_roundof(struct dev *d, unsigned int newrate) { return (d->round * newrate + d->rate / 2) / d->rate; } /* * If the device is paused, then resume it. */ void dev_wakeup(struct dev *d) { if (d->pstate == DEV_INIT) { if (log_level >= 2) { dev_log(d); log_puts(": device started\n"); } if (d->mode & MODE_PLAY) { d->prime = d->bufsz; } else { d->prime = 0; } d->poffs = 0; /* * empty cycles don't increment delta, so it's ok to * start at 0 **/ d->delta = 0; d->pstate = DEV_RUN; dev_sio_start(d); } } /* * check that all clients controlled by MMC are ready to start, if so, * attach them all at the same position */ void dev_sync_attach(struct dev *d) { int i; struct slot *s; if (d->tstate != MMC_START) { if (log_level >= 2) { dev_log(d); log_puts(": not started by mmc yet, waiting...\n"); } return; } for (i = 0; i < DEV_NSLOT; i++) { s = d->slot + i; if (!s->ops || s->tstate == MMC_OFF) continue; if (s->tstate != MMC_START || s->pstate != SLOT_READY) { #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": not ready, start delayed\n"); } #endif return; } } if (!dev_ref(d)) return; for (i = 0; i < DEV_NSLOT; i++) { s = d->slot + i; if (!s->ops) continue; if (s->tstate == MMC_START) { #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": started\n"); } #endif s->tstate = MMC_RUN; slot_attach(s); } } d->tstate = MMC_RUN; dev_midi_full(d); dev_wakeup(d); } /* * start all slots simultaneously */ void dev_mmcstart(struct dev *d) { if (d->tstate == MMC_STOP) { d->tstate = MMC_START; dev_sync_attach(d); #ifdef DEBUG } else { if (log_level >= 3) { dev_log(d); log_puts(": ignoring mmc start\n"); } #endif } } /* * stop all slots simultaneously */ void dev_mmcstop(struct dev *d) { switch (d->tstate) { case MMC_START: d->tstate = MMC_STOP; return; case MMC_RUN: d->tstate = MMC_STOP; dev_unref(d); break; default: #ifdef DEBUG if (log_level >= 3) { dev_log(d); log_puts(": ignored mmc stop\n"); } #endif return; } } /* * relocate all slots simultaneously */ void dev_mmcloc(struct dev *d, unsigned int origin) { if (log_level >= 2) { dev_log(d); log_puts(": relocated to "); log_putu(origin); log_puts("\n"); } if (d->tstate == MMC_RUN) dev_mmcstop(d); d->mtc.origin = origin; if (d->tstate == MMC_RUN) dev_mmcstart(d); } /* * allocate a new slot and register the given call-backs */ struct slot * slot_new(struct dev *d, char *who, struct slotops *ops, void *arg, int mode) { char *p; char name[SLOT_NAMEMAX]; unsigned int i, unit, umap = 0; unsigned int ser, bestser, bestidx; struct slot *s; /* * create a ``valid'' control name (lowcase, remove [^a-z], trucate) */ for (i = 0, p = who; ; p++) { if (i == SLOT_NAMEMAX - 1 || *p == '\0') { name[i] = '\0'; break; } else if (*p >= 'A' && *p <= 'Z') { name[i++] = *p + 'a' - 'A'; } else if (*p >= 'a' && *p <= 'z') name[i++] = *p; } if (i == 0) strlcpy(name, "noname", SLOT_NAMEMAX); /* * find the first unused "unit" number for this name */ for (i = 0, s = d->slot; i < DEV_NSLOT; i++, s++) { if (s->ops == NULL) continue; if (strcmp(s->name, name) == 0) umap |= (1 << s->unit); } for (unit = 0; ; unit++) { if ((umap & (1 << unit)) == 0) break; } /* * find a free controller slot with the same name/unit */ for (i = 0, s = d->slot; i < DEV_NSLOT; i++, s++) { if (s->ops == NULL && strcmp(s->name, name) == 0 && s->unit == unit) { #ifdef DEBUG if (log_level >= 3) { log_puts(name); log_putu(unit); log_puts(": reused\n"); } #endif goto found; } } /* * couldn't find a matching slot, pick oldest free slot * and set its name/unit */ bestser = 0; bestidx = DEV_NSLOT; for (i = 0, s = d->slot; i < DEV_NSLOT; i++, s++) { if (s->ops != NULL) continue; ser = d->serial - s->serial; if (ser > bestser) { bestser = ser; bestidx = i; } } if (bestidx == DEV_NSLOT) { if (log_level >= 1) { log_puts(name); log_putu(unit); log_puts(": out of sub-device slots\n"); } return NULL; } s = d->slot + bestidx; if (s->name[0] != '\0') s->vol = MIDI_MAXCTL; strlcpy(s->name, name, SLOT_NAMEMAX); s->serial = d->serial++; s->unit = unit; #ifdef DEBUG if (log_level >= 3) { log_puts(name); log_putu(unit); log_puts(": overwritten slot "); log_putu(bestidx); log_puts("\n"); } #endif found: if (!dev_ref(d)) return NULL; s->dev = d; s->ops = ops; s->arg = arg; s->pstate = SLOT_INIT; s->tstate = MMC_OFF; if ((mode & s->dev->mode) != mode) { if (log_level >= 1) { slot_log(s); log_puts(": requested mode not supported\n"); } return 0; } s->mode = mode; aparams_init(&s->par); if (s->mode & MODE_PLAY) { s->mix.slot_cmin = s->mix.dev_cmin = 0; s->mix.slot_cmax = s->mix.dev_cmax = d->pchan - 1; } if (s->mode & MODE_RECMASK) { s->sub.slot_cmin = s->sub.dev_cmin = 0; s->sub.slot_cmax = s->sub.dev_cmax = ((s->mode & MODE_MON) ? d->pchan : d->rchan) - 1; } s->xrun = XRUN_IGNORE; s->dup = 0; s->appbufsz = d->bufsz; s->round = d->round; s->rate = d->rate; s->mix.maxweight = ADATA_UNIT; dev_midi_slotdesc(d, s); dev_midi_vol(d, s); return s; } /* * release the given slot */ void slot_del(struct slot *s) { s->arg = s; s->ops = &zomb_slotops; switch (s->pstate) { case SLOT_INIT: s->ops = NULL; break; case SLOT_START: case SLOT_READY: case SLOT_RUN: slot_stop(s); /* PASSTHROUGH */ case SLOT_STOP: break; } dev_unref(s->dev); s->dev = NULL; } /* * change the slot play volume; called either by the slot or by MIDI */ void slot_setvol(struct slot *s, unsigned int vol) { #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": setting volume "); log_putu(vol); log_puts("\n"); } #endif s->vol = vol; if (s->ops == NULL) return; s->mix.vol = MIDI_TO_ADATA(s->vol); } /* * attach the slot to the device (ie start playing & recording */ void slot_attach(struct slot *s) { struct dev *d = s->dev; unsigned int slot_nch, dev_nch; long long pos; int startpos; /* * start the device if not started */ dev_wakeup(d); /* * get the current position, the origin is when the first sample * played and/or recorded */ startpos = dev_getpos(d) * (int)s->round / (int)d->round; /* * adjust initial clock */ pos = (long long)d->delta * s->round; s->delta = startpos + pos / (int)d->round; s->delta_rem = pos % d->round; s->pstate = SLOT_RUN; #ifdef DEBUG if (log_level >= 2) { slot_log(s); log_puts(": attached at "); log_puti(startpos); log_puts(", delta = "); log_puti(d->delta); log_puts("\n"); } #endif /* * We dont check whether the device is dying, * because dev_xxx() functions are supposed to * work (i.e., not to crash) */ #ifdef DEBUG if ((s->mode & d->mode) != s->mode) { slot_log(s); log_puts(": mode beyond device mode, not attaching\n"); panic(); } #endif s->next = d->slot_list; d->slot_list = s; s->skip = 0; if (s->mode & MODE_PLAY) { slot_nch = s->mix.slot_cmax - s->mix.slot_cmin + 1; dev_nch = s->mix.dev_cmax - s->mix.dev_cmin + 1; s->mix.decbuf = NULL; s->mix.resampbuf = NULL; s->mix.join = 1; s->mix.expand = 1; if (s->dup) { if (dev_nch > slot_nch) s->mix.expand = dev_nch / slot_nch; else if (dev_nch < slot_nch) s->mix.join = slot_nch / dev_nch; } cmap_init(&s->mix.cmap, s->mix.slot_cmin, s->mix.slot_cmax, s->mix.slot_cmin, s->mix.slot_cmax, 0, d->pchan - 1, s->mix.dev_cmin, s->mix.dev_cmax); if (!aparams_native(&s->par)) { dec_init(&s->mix.dec, &s->par, slot_nch); s->mix.decbuf = xmalloc(s->round * slot_nch * sizeof(adata_t)); } if (s->rate != d->rate) { resamp_init(&s->mix.resamp, s->round, d->round, slot_nch); s->mix.resampbuf = xmalloc(d->round * slot_nch * sizeof(adata_t)); } s->mix.vol = MIDI_TO_ADATA(s->vol); dev_mix_adjvol(d); } if (s->mode & MODE_RECMASK) { slot_nch = s->sub.slot_cmax - s->sub.slot_cmin + 1; dev_nch = s->sub.dev_cmax - s->sub.dev_cmin + 1; s->sub.encbuf = NULL; s->sub.resampbuf = NULL; s->sub.join = 1; s->sub.expand = 1; if (s->dup) { if (dev_nch > slot_nch) s->sub.join = dev_nch / slot_nch; else if (dev_nch < slot_nch) s->sub.expand = slot_nch / dev_nch; } cmap_init(&s->sub.cmap, 0, ((s->mode & MODE_MON) ? d->pchan : d->rchan) - 1, s->sub.dev_cmin, s->sub.dev_cmax, s->sub.slot_cmin, s->sub.slot_cmax, s->sub.slot_cmin, s->sub.slot_cmax); if (s->rate != d->rate) { resamp_init(&s->sub.resamp, d->round, s->round, slot_nch); s->sub.resampbuf = xmalloc(d->round * slot_nch * sizeof(adata_t)); } if (!aparams_native(&s->par)) { enc_init(&s->sub.enc, &s->par, slot_nch); s->sub.encbuf = xmalloc(s->round * slot_nch * sizeof(adata_t)); } /* * N-th recorded block is the N-th played block */ s->sub.prime = -startpos / (int)s->round; } } /* * if MMC is enabled, and try to attach all slots synchronously, else * simply attach the slot */ void slot_ready(struct slot *s) { /* * device may be disconnected, and if so we're called from * slot->ops->exit() on a closed device */ if (s->dev->pstate == DEV_CFG) return; if (s->tstate == MMC_OFF) slot_attach(s); else { s->tstate = MMC_START; dev_sync_attach(s->dev); } } /* * setup buffers & conversion layers, prepare the slot to receive data * (for playback) or start (recording). */ void slot_start(struct slot *s) { unsigned int bufsz; #ifdef DEBUG struct dev *d = s->dev; if (s->pstate != SLOT_INIT) { slot_log(s); log_puts(": slot_start: wrong state\n"); panic(); } #endif bufsz = s->appbufsz; if (s->mode & MODE_PLAY) { #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": playing "); aparams_log(&s->par); log_puts(" -> "); aparams_log(&d->par); log_puts("\n"); } #endif s->mix.bpf = s->par.bps * (s->mix.slot_cmax - s->mix.slot_cmin + 1); abuf_init(&s->mix.buf, bufsz * s->mix.bpf); } if (s->mode & MODE_RECMASK) { #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": recording "); aparams_log(&s->par); log_puts(" <- "); aparams_log(&d->par); log_puts("\n"); } #endif s->sub.bpf = s->par.bps * (s->sub.slot_cmax - s->sub.slot_cmin + 1); abuf_init(&s->sub.buf, bufsz * s->sub.bpf); } s->mix.weight = MIDI_TO_ADATA(MIDI_MAXCTL); #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": allocated "); log_putu(s->appbufsz); log_puts("/"); log_putu(SLOT_BUFSZ(s)); log_puts(" fr buffers\n"); } #endif if (s->mode & MODE_PLAY) { s->pstate = SLOT_START; } else { s->pstate = SLOT_READY; slot_ready(s); } } /* * stop playback and recording, and free conversion layers */ void slot_detach(struct slot *s) { struct slot **ps; #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": detaching\n"); } #endif for (ps = &s->dev->slot_list; *ps != s; ps = &(*ps)->next) { #ifdef DEBUG if (s == NULL) { slot_log(s); log_puts(": can't detach, not on list\n"); panic(); } #endif } *ps = s->next; if (s->mode & MODE_RECMASK) { if (s->sub.encbuf) xfree(s->sub.encbuf); if (s->sub.resampbuf) xfree(s->sub.resampbuf); } if (s->mode & MODE_PLAY) { if (s->mix.decbuf) xfree(s->mix.decbuf); if (s->mix.resampbuf) xfree(s->mix.resampbuf); dev_mix_adjvol(s->dev); } } /* * put the slot in stopping state (draining play buffers) or * stop & detach if no data to drain. */ void slot_stop(struct slot *s) { #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": stopping\n"); } #endif if (s->pstate == SLOT_START) { if (s->mode & MODE_PLAY) { s->pstate = SLOT_READY; slot_ready(s); } else s->pstate = SLOT_INIT; } if (s->mode & MODE_RECMASK) abuf_done(&s->sub.buf); if (s->pstate == SLOT_READY) { #ifdef DEBUG if (log_level >= 3) { slot_log(s); log_puts(": not drained (blocked by mmc)\n"); } #endif if (s->mode & MODE_PLAY) abuf_done(&s->mix.buf); s->ops->eof(s->arg); s->pstate = SLOT_INIT; } else { /* s->pstate == SLOT_RUN */ if (s->mode & MODE_PLAY) s->pstate = SLOT_STOP; else { slot_detach(s); s->pstate = SLOT_INIT; s->ops->eof(s->arg); } } if (s->tstate != MMC_OFF) s->tstate = MMC_STOP; } void slot_skip_update(struct slot *s) { int skip; skip = slot_skip(s); while (skip > 0) { #ifdef DEBUG if (log_level >= 4) { slot_log(s); log_puts(": catching skipped block\n"); } #endif if (s->mode & MODE_RECMASK) s->ops->flush(s->arg); if (s->mode & MODE_PLAY) s->ops->fill(s->arg); skip--; } } /* * notify the slot that we just wrote in the play buffer, must be called * after each write */ void slot_write(struct slot *s) { if (s->pstate == SLOT_START && s->mix.buf.used == s->mix.buf.len) { #ifdef DEBUG if (log_level >= 4) { slot_log(s); log_puts(": switching to READY state\n"); } #endif s->pstate = SLOT_READY; slot_ready(s); } slot_skip_update(s); } /* * notify the slot that we freed some space in the rec buffer */ void slot_read(struct slot *s) { slot_skip_update(s); }